Spring-post for seats or handle-bars of bicycles.



No. 627,676. Patented lune 27, |899.' w. N. Amnnv.

SPRING POST FOR SEATS 0B HANDLE BARS 0F BICYCLES.

(Application led Sept. 5, 1898.)

(No'lllodel.)

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By l M Arrofmsr THE Ncmms PETE co. surnomme., wAsmNoToN, u. c,

UNITED STATES PATi-NT OFFICE.

WILLIAM N.AMORY, OF NEWYORK, N. Y.

SPRING-POST FORSEATS OR HANDLE-BARS OF BICYCLESV.

SPECIFICATION forming part of Letters Patent No. 627,676, dated June 27, 18'99. 1

Application filed September 5, 1896. Serial No. 604,928. (No model.)

. advantages of the T- post in adjustment of the saddle thereon.

In the accompanying drawings, Figure 1 is a side View of a portion of a bicycle having a T-post and saddle fitted with my invention. Fig. 2 is a side view of the T- post'fltted with one form of my improved cushion, shown in section. Fig. 3 is a top View of one form of my improved cushion, and Fig. 4 shows one form of bearing-plate adapted to use with said cushion.

My cushioned saddle-post is shown as a whole in Fig. 2 at lA, the horizontal saddlebearing being shown at 1, attached to the usual downwardly-projecting stem 2. The usual mode of attachment of the saddle B to the post A is shown in Fig. l. The stem 2 is provided at its upper end with a shoulder 3, under which the bearing-plate 4 is adapted to be placed surrounding the stem 2. The greater portion of the length of the stem 2 is surrounded'by the sleeve 5, having an appropriate slot, as 6, which cooperates with the pin 7 on the stem 2 to prevent the latter rotating within the sleeve. The sleeve 5 carries at its upper end the lower bearing-plate 8. (Shown in Fig.v 4.) The slots 9 in the central perforation of plate 8 are also provided in the upper plate 4, the two plates being similar in shape. The pins IO and 11 respectively coperate with the slots 9 in upper and lower plates 4 and 8 to prevent their rotation. The aperture 12 is provided in plate 8 to accommodate the Valve 13.0n the pneumatic cushion D. (See Fig. 3.) This cushion has a generally annular shape and is intended to surroundthe stem 2 of the saddle-post, as shown in Fig. 2. It is provided with a flattened portion 14 on one side and a central aperture 15 for accommodation of the stem '2. The two bearing-plates 4 and 8, between which the cushion D is adapted to rest, as shown, are provided with rentrant curved portions 16, corresponding to the rentrant curve 17, formed by the flattened part of the cushion 14. The provision of this rentrant curve in 4the cushion and plates is highly important A sired to place the saddle near the stem 2, in

which case the edge of the cushion would interfere with the bolt 18 were not the flattened portion 14 provided to give room for said bolt.

I have found by experiment that the symmetrical flattening'of an air-cushion of the form shown does not interfere with the functions of said cushion in deadening jolting shocks.

What I claim is- As an article of manufacture adapted for use with adjustable saddles, a T-post, a sleeve surrounding the stem thereof, bearing-plates surrounding said stem, one on said stem and the other on said sleeve, each of said plates being provided with a rentrant curved portion, and a pneumatic cushion surrounding said stem between said plates and provided with a rentrant curved portion corresponding to said curves on said plates for permitting the adjustable fastening of the saddle to approach the stem, substantially as described.

Signed in the city and county of New York and State of New York this 4th day of September, A. D. 1896.

WILLIAM N. AMORY.

Witnesses:

CHAs. N. ASHLEY, LIZZIE C. MANNING. 

